Home / 687,917.60-1,029,908.10-668,234.60

Finding the Fourth Proportional to 687,917.60, 1,029,908.10 and 668,234.60

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Solution

The fourth proportional to 687,917.60, 1,029,908.10 and 668,234.60 is: 1,000,439.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,917.60 : 1,029,908.10 = 668,234.60 : x
  2. Step 2: Convert to fraction form
    687,917.60/1,029,908.10 = 668,234.60/x
  3. Step 3: Cross multiply
    687,917.60x = 1,029,908.10 × 668,234.60
  4. Step 4: Simplify right side
    687,917.60x = 688,220,227,240.26
  5. Step 5: Solve for x
    x = 688,220,227,240.26/687,917.60
  6. Step 6: Final answer
    x = 1,000,439.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.